-
Why can't potassium fertilizer be replaced by organic fertilizer or compound fertilizer?
In field crop production, excessive application of potassium fertilizer is generally rare, while potassium deficiency in crops is everywhere. In recent years, farmers have gradually come to recognize the role of potassium fertilizer, but some misconceptions remain: first, the belief that once organic fertilizer is applied, potassium fertilizer is no longer needed; second, the reluctance to apply potassium fertilizer after applying compound fertilizer...
-
Different types of micro-fertilizers have different usage methods, and scientific application requires distinction.
In recent years, the problem of wheat seed burning and seedling burning during autumn planting has occurred repeatedly. In mild cases, it causes 20% to 30% missing seedlings and broken rows; in severe cases, replanting becomes necessary, and this problem is on the rise. In pursuit of higher and higher yields, some farmers one-sidedly believe that as long as they apply more fertilizer, they can achieve high yields. They pay no attention to whether the soil nutrients in the plot are abundant or deficient...
-
Practical Methods of Using Fertilizers to Control Crop Pests
1. Nitrogen fertilizer: Commonly used nitrogen fertilizers, such as urea, ammonium bicarbonate, and ammonia water, have stimulating, corrosive, and fumigating effects on pests, and are effective for controlling small, low-endurance pests such as aphids and red spider mites. When pests occur, spray a 2% urea solution or 1% ammonium bicarbonate solution on the leaves, once every 7 days, for 2--3...
-
Clever use of fertilizers can effectively reduce crop diseases
Research and practice have proven that using chemical or organic fertilizers to control crop pests and diseases is not only economical, safe and effective, but also saves pesticides, while at the same time having a fertilizing effect and the characteristics of not harming natural enemies and not polluting the environment. It can be said to achieve multiple benefits at once and is well worth promoting in production. Nitrogen fertilizer: 1. Ammonium bicarbonate...
-
Which fertilizers cannot be mixed in agricultural production?
Pure urea is a white crystalline solid, while the industrial product is small white or pale yellow granules, with a nitrogen content of 44-46%. It is only slightly hygroscopic, easily soluble in water, and is a neutral fertilizer; it has the highest nutrient content among solid nitrogen fertilizers. Because it is absorbed quickly through the leaves and has a high utilization rate, its yield-increasing effect is great, making it most suitable for foliar topdressing. The spraying concentration should be based on...
-
What are the precautions for fertilizer application and mixing
There are many issues worth noting during fertilizer application. Specifically, you should figure out which fertilizers can be mixed and applied together and which cannot. Mixing ammonium bicarbonate with superphosphate can allow crops to absorb nutrients such as nitrogen and phosphorus while also neutralizing part of the free acid in superphosphate and eliminating its harm. But it should...
-
How should calcium magnesium phosphate fertilizer be applied for the best results?
How should calcium magnesium phosphate fertilizer be applied for good results? Please advise. The main production areas of calcium magnesium phosphate fertilizer are in China. Because its raw materials are widely available and its production process is simple, it has developed rapidly in recent years in the phosphate mining areas of southern China. The fertilizer looks like a grayish-white, blackish-green or brown glassy fine powder, and its composition is fairly complex, mainly Ca3(PO...
-
How should phosphate fertilizer be applied during wheat cultivation?
How should phosphate fertilizer be applied when growing wheat? Please advise: in wheat production, some places either emphasize nitrogen and neglect phosphorus, or apply phosphorus the wrong way, which reduces the yield increase. Scientific phosphorus application in wheat should pay attention to the following points: 1. Look at the soil organic matter content. In soil with organic matter content below 1.5%, the yield-increasing effect of phosphorus application is...
-
How can nitrogen fertilizer use efficiency be effectively improved?
What effect does applying nitrogen fertilizer have on fruit? Please explain that the flavor of a fruit is the comprehensive expression of the properties and composition of the countless cells that make it up. How sweet a fruit is depends on how much sugar its cells contain, yet the accumulation of sugar is closely related to nitrogen fertilizer application. It turns out that from petal fall to 3... after petal fall
-
What should be noted when applying urea?
How should phosphorus fertilizer be applied rationally when growing chili peppers? Please advise: during the growth and development period of chili peppers, apply phosphorus and potassium fertilizer once a month at the roots, each time applying 40-50 kg of superphosphate or calcium magnesium phosphate fertilizer per mu, and 15-20 kg of potassium chloride or potassium sulfate. After thoroughly stirring and mixing the phosphorus and potassium fertilizers evenly, broadcast them around the roots of the chili pepper plants...
条件筛选